Use this skill when working with the redberry/mailbox-for-laravel package — capturing, inspecting, or asserting against outgoing mail in development. Activates when writing tests that use the InteractsWithMailbox trait or Mailbox facade (assertSent, assertSentTo, assertNothingSent, firstSent and per-message assertions like assertHasSubject, assertSeeInHtml, assertHasAttachment); when configuring the mailbox transport in config/mailbox.php; when picking a storage driver (sqlite/database/file) or pairing message and attachment stores; when extending MessageStore (10 methods) or AttachmentStore (8 methods) contracts with a custom driver via config('mailbox.store.resolvers'); when adding routes/middleware behind the viewMailbox gate; when building UI inside the self-contained Vue 3 dashboard under resources/js (no Inertia — standalone Vue app talking to JSON endpoints); when running mailbox:install, mailbox:clear, mailbox:dev-link, or mailbox:upgrade; or when troubleshooting captured mail, CID-rewritten inline im
2026-06-04